[ 4072.771422][T28694] gre: GRE over IPv4 demultiplexer driver
[ 4074.581205][T28724] ip_gre: GRE over IPv4 tunneling driver
[ 4122.662027][T29295] ip6_gre: GRE over IPv6 tunneling driver
[ 4139.042460][T29494] ping (29494) used greatest stack depth: 22600 bytes left
[ 4155.803916][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4160.667841][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4164.827797][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4169.691815][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!